Beach nourishment which is also referred to as beach replenishment is a process by which sediment lose through longshore drift or erosion which is replaced from sources outside of the eroding beach. The structural alternative involves constructing a seawall or breakwater.
Beach nourishment is often proposed when beach erosion threatens to remove an existing beach, make it too narrow to be used, and/or when property behind an eroding beach is threatened. Beach nourishment have many advantages and some advantages are that structures behind beach are protected as long as the added sand remains and nourishment restores and widens the recreational beach.However, there are also disadvantages.Beach nourishment is very expensive and beach nourishment sand also erodes faster than natural sand.